Magneto-armature



M. DUTEN.

MAGNETO ARM'ATURE.

APPLICATION FILED MAR. 30', 1921.

1,394,2 9, Patented Oct. 18, 1921 UNITED STATES MAURICE DUTEN, OFLEVALLOIS-E'ERRET, FRANCE,

ASSIGNOR TO LA SOCIETE DUTEN,

DOUBLET & CIR, OF LEVALLOIS-PERRET, SEINE, FRANCE.

MAGNETO-ARMATURE.

Specification of Letters Patent.

Patented Get. 18, 1321.

Application filed March 30, 1921. Serial No. 457,112.

(GRANTED UNDER THE PROVISIQNS (3F THE ACT 01* MARCH 3, 1921, 41 STAT. L,1313.)

1 '0 all to 710m 2'15 m 04 concern Be it known that I, Mannron DU'rnN,citizen of the Republic of France, and resident of Levallois-Perret,Seine, France, (postottice address, 54; Rue des Arts.) have inventea newand useful Improvements in or Relating to h Iagneto-Armatures, (forwhich I have filed an application in France Fel ruary 25, 1920, PatentNo. 510,725,) which improvements are fully set forth in the followingspecification.

This invention relates to armatures for magnetos and is characterized bya method of making the saidarmature in three parts, namely two steel endpieces and a core made of soft sheet-metal engaging the said pieces.

The subject-matter or" the invention is illustrated in theaccompanyingdrawings in which Figure 1 is a side elevation.

Fig. 2 a horizontal section on lin i iA of Fig. 1, and

Fig. 3 is an end elevation.

The steel end pieces (6, of usual shape. are of unitary construction andare provided each with a central pening Z adapted to receive one end ofthe core 0 constituted by a plurality of soft sheet-metal elements (Zpacked between two clamping cheek plates 6 made of steel. Rivets f formthe said cheek plates and laminated elements into a compact and rigidbundle, the ends (7 of which have a shape conforming generally to thatof the openings Z) in the end pieces (.4 and are driven through saidopenings s as to have a forced lit therein. The said ends g are slightlymortised, as shown, thereby providing shoulders against which the endpieces abut.

A magneto armature made according to the present invention is verystrong since the core is the only riveted part which however isstrengthened owing to its ends firmly engaging the end pieces.

I claim as my invention A rotor member, comprising a pair of steel endpieces each provided with an opening; and a core consisting of aplurality of settmetal laminae, a pair of cheek plates between whichsaid laminae are packed, and rivets extending through said cheek platesand laminre to form the same into a compact rigid bundle; said corehaving mortised ends which are shaped to conform gen orally to the shapeof the openings in the end pieces and are in intimate contact with thewalls of said openings, said end pieces abutting against the shouldersproduced by the mortised formation of the core ends. i

In testimony whereof I have signed this specification in the presence oftwo subscrib ing witnesses.

MAURICE DUTEN.

ll itnesses AnMoNn DUFOUR. CHARLES LEON LoIsEL.

